☁️ Cloud & Databases

SQL's DDL vs DML: The Rookie Mistake That Burns Pros Too

Thought SQL was just SELECT * FROM life? Wrong. DDL and DML split hairs that can nuke your data — or save it.

theAIcatchup Apr 11, 2026 4 min read
Infographic contrasting SQL DDL structure commands and DML data operations

⚡ Key Takeaways

  • DDL builds and breaks database structures — high risk, no WHERE. 𝕏
  • DML manipulates rows with SELECT/INSERT/UPDATE/DELETE — transactional, filter-friendly. 𝕏
  • Master WHERE and CASE WHEN to avoid disasters; basics trump hype. 𝕏
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#CASE WHEN #DDL #DML #SQL #SQL DDL #SQL DML #SQL WHERE #SQL WHERE clause #SQL commands #data manipulation #database commands #database structure #databases

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Originally reported by Dev.to

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